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The Checker Framework enhances Java’s type system to
make it more powerful and useful. This lets software developers
detect and prevent errors in their Java programs.
The Checker Framework includes compiler plug-ins ("checkers")
that find bugs or verify their absence. It also permits you to
write your own compiler plug-ins.
package org.checkerframework.dataflow.cfg.node;
import java.util.Collection;
import java.util.Collections;
import com.sun.source.tree.LiteralTree;
import com.sun.source.tree.Tree;
/**
* A node for an string literal. For example:
*
*
* "abc"
*
*
* @author Stefan Heule
*
*/
public class StringLiteralNode extends ValueLiteralNode {
public StringLiteralNode(LiteralTree t) {
super(t);
assert t.getKind().equals(Tree.Kind.STRING_LITERAL);
}
@Override
public String getValue() {
return (String) tree.getValue();
}
@Override
public R accept(NodeVisitor visitor, P p) {
return visitor.visitStringLiteral(this, p);
}
@Override
public boolean equals(Object obj) {
// test that obj is a StringLiteralNode
if (!(obj instanceof StringLiteralNode)) {
return false;
}
// super method compares values
return super.equals(obj);
}
@Override
public Collection getOperands() {
return Collections.emptyList();
}
@Override
public String toString() {
return "\"" + super.toString() + "\"";
}
}